Interaction between soil and a wide cutting blade using the discrete element method

Shmulevich, I.; Asaf, Z.; Rubinstein, D.

doi:10.1016/j.still.2007.08.009

Cited by 144 publications

(45 citation statements)

References 20 publications

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“…The working depth of the active body can be adjusted by the means of the screw mechanism (13). The screw mechanism (14) is used to adjust the vertical position of the tire wheel; the screw mechanism (15) is used to change the vertical position of the soil leveling and compaction drum.…”

Section: Design and Testing Of A Laboratory Soil Channel Test Rigmentioning

confidence: 99%

“…Five methods may be used in order to solve the problems regarding the interaction between soil and the active parts: empirical and semi empirical methods, dimensional analysis, finite elements method (FEM), discrete elements method (DEM) and the neuronal networks method -ANN ( Figure 3) [13]. The mechanism of the active part-soil interaction may also be described using the rheological behavior of soil, taking into account its dynamic characteristics.…”

Section: Introduction To Numerical Simulationmentioning

confidence: 99%

See 1 more Smart Citation

Impact of Agricultural Traffic and Tillage Technologies on the Properties of Soil

Ţenu¹,

Cârlescu²,

Cojocariu³

et al. 2012

Resource Management for Sustainable Agriculture

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Section: Design and Testing Of A Laboratory Soil Channel Test Rigmentioning

confidence: 99%

Section: Introduction To Numerical Simulationmentioning

confidence: 99%

Impact of Agricultural Traffic and Tillage Technologies on the Properties of Soil

Ţenu¹,

Cârlescu²,

Cojocariu³

et al. 2012

Resource Management for Sustainable Agriculture

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“…The contact force is also determined by the particle properties (e.g. stiffness) and the overlap between the granules in contact (Momozu et al, 2003;Shmulevich et al, 2007;Franco et al, 2007;Obermayr et al, 2011;Chen et al, 2013). For CFD the tool is considered to be stationary and the soil (visco-plastic fluid) was displaced around the tool.…”

Section: Introductionmentioning

confidence: 99%

Soil-blade orientation effect on tillage forces determined by 3D finite element models

Ibrahmi

Bentaher

Maalej

2014

Span. j. agric. res.

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This paper investigated the effect of the cutting parameters of a blade on the tillage force components using finite element modeling. A three-dimensional model was carried out with Abaqus Explicit in order to study the interaction between the tool and soil. The soil was modeled with linear forms of the Drucker-Pager model, while the tool was considered as a rigid body with a reference point taken at its tip. The effect of tillage depth and the width of a vertical blade were studied. It was found that the amounts of the draught and vertical forces increase linearly with a slope of 0.037 and 0.0143 respectively when the width increases. The narrow tool (width < 60mm) has a greater effect on the specific draught force than a larger tool. Draught and specific draught force increase with polynomial and linear curve respectively versus the depth. However, this effect was reduced for the vertical force. These results were in a good agreement with previously published works. The second part of this paper is focused on the oblique position of the blade to evaluate the effect of the attack angles on both the tillage forces (draught, lateral and vertical) and the cutting process of the soil during and after its failure. For all considered angles, the draught force presents the highest values compared to the vertical and lateral forces. Results showed that working with small cutting and an average rake angles (30°to 60°and 45°respectively) can produce a good soil inversion.Additional key words: FEM; oblique blade; force; attack angles.* Corresponding author: ayadi.ibrahmi@yahoo.fr; ayadiibrahmi@hotmail.fr Received: 16-02-14. Accepted: 10-10-14.Abbreviations used: CFD (computational fluid dynamics); DEM (discrete element method); FEM (finite element method); RF (reaction force); RF2 (vertical force); RF3 (draught force); α (cutting angle); θ (rake angle).

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“…The results showed that to use a combination device consisting of double disk opener and roller on wet and loose soil to ditch, the performance was best. Huichun Yu [9][10] et al analyzed different type furrow under different parameters by computer simulation. The different parameters were showed in Fig.4, the mathematical model for calculating the different parameters was established.…”

Section: F=n+t+qmentioning

confidence: 99%

Status and Prospect of Research on Juncao Opener

Zheng¹,

Yang²

2018

Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017)

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Abstract. The opener is the important part of planter, which can affect the accuracy of planting, seed emergence rate and situation of seed after fell in the seedbed. This paper summaries the type of openers at home and abroad, and the characteristics of each kind of opener and suitable places are analyzed. Because of the inapposite ditch and seed level, and the seed will move by using the present opener during no-till planting, that can be also caused low seed emergence rate ,low planting efficiency and inconsistency distributed. In order to solve those problems, giant juncao opener including width and depth of the adjustment , fertilization function and profiling ability was designed.

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Interaction between soil and a wide cutting blade using the discrete element method

Cited by 144 publications

References 20 publications

Impact of Agricultural Traffic and Tillage Technologies on the Properties of Soil

Impact of Agricultural Traffic and Tillage Technologies on the Properties of Soil

Soil-blade orientation effect on tillage forces determined by 3D finite element models

Status and Prospect of Research on Juncao Opener

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